On 6 October 2016 at 11:27, Davide Ferrari <[email protected]> wrote: > Well, actually I want to migrate both DNS hostnames and the subnet (from a > /24 to a /16) to which the ovirtmgr interface is connected. > The second change is the most problematic as you say..in any case what would > be the best procedure, even if it implies downtime?
Something like the following (I'm assuming you have multiple hosts...): 1. Put host in to maintenance mode 2. Remove it from oVirt 3. Change host network settings 4. Re-attach host with new setting to oVirt 5. Migrate some VMs to the new host and fix their IP settings 6. Repeat for other hosts Things to note: - If you are using hosted-engine, it will further complicate things for you, I'm not sure if and how can one change the H.E. IP. - If you are using an IP-based storage that is accessed via the same subnet, you need to ensure it is still accessible with the same name/IP from the new subnet. If you are only making this change so you can run more VMs, you can consider adding the new subnet as a new VLAN/physical LAN to the existing hosts, and keep using old /24 subnet for ovirtmgmt. It is a good idea to separate ovirtmgmt traffic from other traffic anyway... -- Barak Korren [email protected] RHEV-CI Team _______________________________________________ Users mailing list [email protected] http://lists.ovirt.org/mailman/listinfo/users
